The Spanish word 'tinción' meaning 'staining' or 'dyeing' comes from the Latin word 'tinctio' (meaning 'dyeing' or 'dipping'), which itself derives from the Latin verb 'tingere' meaning 'to dip' or 'to dye'. The evolution from Latin to Spanish maintained both the form and meaning quite closely, with just the expected phonetic changes that occurred as Latin developed into Spanish.

Some related and more common Spanish words include 'tinte' (dye), 'teñir' (to dye), and 'tinta' (ink). All these words share the same Latin root 'tingere' and form a family of words related to coloring, dyeing, and staining in Spanish.

English speakers might recognize the connection to words like 'tint', 'tinge', and 'tincture', which all come from the same Latin root 'tingere'. A 'tint' is a shade or variety of a color, while a 'tinge' is a slight coloring or trace of something. A 'tincture' was historically a medicine made by dissolving a drug in alcohol, referring to the process of infusing or 'dyeing' the liquid with the medicinal substance.